GB3EN The North London Television Group
- Formed in 1998 with the aim of encouraging Amateur Television (ATV) activity in the North London/Lea Valley area, and specifically to establish an Amateur Television repeater in North London.
- RMS International, italian distributor of Alcava batteries and power supply, since 1975 manufacture power amplifiers, watt meters, antenna tuners, TVI filters and other accessories for hams and cb radio
- AEA Technology Inc. is a pioneer and leading manufacturer of RF and cable test equipment for the wireless, Telco, CATV, NMR & MRI, RFID, telemetry, aviation, commercial, military, and two-way radio industries. Produces SWR Meters, Pre Amplifiers, filters, power meters and antenna testing products
- AMSAT is a worldwide group of Amateur Radio Operators who share a common interest in building, launching and communicating with each other through non-commercial Amateur Radio satellites.
- DXtreme Software produces powerful and easy-to-use logging applications for radio enthusiasts such as
Amateur Radio operators, Shortwave DXers, Shortwave listeners, Broadcast band DXers, VLF DXers,
VHF, UHF, and TV DXers
- FTV is an MS-DOS program used to receive images from Weather Satellites and Terrestrial Facsimile Stations, text transmissions from radio telex services, Morse code, as well as Amateur Radio FAX, SSTV, RTTY and CW signals. It can also be used to transmit FAX and SSTV. No external hardware, other than a radio, is required, as all the necessary signal processing is implemented in software.